Nail Gun Driving Mechanism With Two-Stage Spring Energy Storage
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Solution Overview
Problem
Existing nail guns with lithium battery power face issues such as gear wear and tear, teeth jamming, and the need for a separate circuit controller, leading to transmission problems and higher costs.
Innovation Solution
A driving and controlling mechanism with a dual-switch, dual-safety design that includes a piston, power spring, pushing component, and motor, utilizing a two-stage energy storage process without direct contact between the pushing component and striking member, and eliminating the need for additional pressure switches or controllers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If a gear matching with a striking member having a groove is used to facilitate energy storage, then energy storage is improved, but the engagement between the gear and the groove is prone to wear and tear and teeth jamming, leading to transmission issues
Solution Approach 1:
The patent extracts the gear mechanism from the striking member assembly, separating the energy storage function (performed by the power spring) from the striking function. The pushing component directly compresses the power spring without requiring gear engagement with the striking member, thereby eliminating the wear and jamming issues while maintaining effective energy storage.
Solution Approach 2:
The patent introduces a pushing component as an intermediary between the motor and the power spring. This pushing component transfers the motor's rotational motion to compress the power spring, eliminating the need for direct gear engagement with the striking member and preventing transmission issues.
2Extent of automation
If a separate circuit controller inside the nail gun is used to control the motor's operation, then motor control is improved, but the cost increases
Solution Approach 1:
The patent implements self-service control where the nail gun body itself serves as the control mechanism. The control circuit is integrated into the nail gun body, allowing it to automatically detect when the nail is in position and activate the motor without requiring an external controller, thereby reducing component quantity and cost while maintaining automation.
Solution Approach 2:
The patent merges the control circuit with the nail gun body structure, combining what were previously separate components (external controller and nail gun) into a single integrated unit. This integration reduces the total number of components and lowers cost while preserving the automated motor control function.
3Use of energy by moving object
If the pushing component directly contacts the piston, then energy storage is improved, but the pushing component may interfere with the piston's movement
Solution Approach 1:
The patent segments the pushing component into distinct functional zones: a first pushing section that contacts the piston for energy storage, and a second pushing section that does not interfere with piston movement. This segmentation allows the pushing component to effectively compress the power spring while maintaining smooth piston operation during the striking cycle.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Ensures smoother energy storage, prevents movement interference, enhances safety, and reduces component complexity, resulting in a compact, cost-effective, and efficient nail gun operation.
Implementation Method 1
at least one power spring in contact with the piston
Implementation Method 2
a motor for rotating the pushing component
Implementation Method 3
a toggle blade reset spring; a first end of the toggle blade reset spring is in contact with the toggle blade
Data Source
AI summary
A nail gun having a driving and controlling mechanism. The driving and controlling mechanism comprises a driving assembly disposed inside a casing of the nail gun for striking nails in a striking direction; and a control assembly controlling the driving assembly. The driving assembly comprises a piston movably disposed inside the casing and attached to a striking member for striking the nails; at least one power spring in contact with the piston; a pushing component for pushing the piston towards the power spring; and a motor for rotating the pushing component. The control assembly comprises a main switch configured to produce a first electronic signal; and a safety switch configured to produce a second electronic signal. The main switch and the safety switch are in communication with the motor such that the motor is configured to operate when it receives both the first electronic signal and the second electronic signal.